Harvy -
Thanks, that's what I need. I understand regenerating the etchant. If
I supply chloride ions (say from salt), think it will work? I'm
guessing that the HCL is what makes CuCl so destructive to things like
nylon.
any opinions?
Harvey
>> I'm trying to avoid the CuCl etchant, or at least, the HCL part of it.
>>
>> Harvey
>>
You really need to get the Adam Sechelle (sp?) article on CuCl etching.\ufffd It explains the chemistry involved in removing the copper.\ufffd Just putting salt (NaCl) in water won't release free Cl ions.\ufffd When the copper is removed, it has to go somewhere, and that is into solution as CuCl.\ufffd The etching (removal of the copper) relies\ufffd on the formation of CuCl and the reversible reaction between CuCl+ and CuCl++.\ufffd I know this isn't what you want to hear, but the chemistry is factual.\ufffd
Norm